Emergency lock for doors



Feb.- 22,1927." I 1,618,738

M. WEIDS EMERGENCY LOCK FOR DOORS Filed Feb. 25, 1.926 2 Sheets -Sh eet '1 644g?! ag/@35- INVENTOR ATroNEY Feb.

M. WEISS EMERGENCY LOCK FOR DOORS Filed Feb. 25, 1926 2 Sheets-Sheet 2 5 *fi' 147 I [1 3? I /Z6 13 U 10/ INVENTOR Morz'iz W; @151? ATT'ORNEY Patented F eb. 22, 1927.

untrue era e- 1 MORI-TZWEISS, OF NEW" YQRK, NZY.

I EMERGENCY LOCK non noose.-

Applioation filed February 25, 1926. Serial No. 80,449.

it isdesired tolock a door as, for example,

inarrfemergency such as-a holdup; or as for shut-out purposes, it be ng understood that the emergency lock is to be m stalled in addition to the. usual.lock'asso ciated with a door.

The invention has for its "object a lock of this'character which, while permitting the 'door to be opened only by. its special key,after the lockhas once been sprung, is so constructed and arranged that continued operation ofthe actuating means for setting. the lock will not serve to release the same, at least not Without simultaneous operation of an additional member which becomesaccessible only when the door has again been opened. Unauthorized opening of the door is thus not possible, and without a proper key therefor thedoor will remain in its locked condition. The invention, furthermore, contemplates a lock which during normal conditions will permit the door to function in the usual manner, the emergency control of said lock being applied electrically and is possible from various points which, under the circumstances, would be located for inconspicuous opera-'- tion. Provision is made, also, whereby a door thus controlled may be maintained open, as during the warmer seasons of the y-ear,-the same being further equipped then with mechanism for releasingthe door to cheat its closing simultaneously with the emergencyoperation of the lock.

The nature of the invention, l1owever,-will best be understood when described in connection with the accompanying drawings, in which Fig. 1 is a fragmentary front-elevation of the novel lock device installed in the casing orframe for a door.

Fig; 2 is a fragmentarv elevation of a door and frame therefor, the latter being broken away to disclose the location therein of the novel locking device, while the frame plate or cover of said locking device is re moved to expose the interior thereof.

Fig. 3 is a horizontal section thru the lock and portion of the frame and door, taken on the lineB-Ei, Fig. '2, looking in the direction of the arrows, the-position shown in dottedlines indicating the position of the keeper member when thejlock has been sprung.

Fig. 4 is a rear elevation of the" lock as mounted'in the door frame Fig. 5 is a horizontal section thru the lock taken on the line 5.5, Fig. 4:, and looking in the direction of the arrows.

Fig. 6 is a detail fragmentary view of the locking bar and associated dete'nt member.

Fig. 7 is a diagrammatic view illustrating the general arrangement of installationof the novel lock. 7

, Referring to the-drawings, 1'0 designates a suitable casingor frame of a door 1 1 which latter is mounted to swing, generally under spring pressure, as by the action of spring hinges 11, to insure its closing in manner well understood. The door is equipped also with of the usual types of lock 12' for normally securing said door, it being understood that the novel and emergency lock is iniaddition to such lock l2. To this end, the emergency lock l3is to be mounted within the door and frame and comprises locking mechanism whichis set for example within said frame, as indicated in" Figs.,1 and 2',

and which has a: front strike or keeper plate 14 provided with a recess or cavity 15 cut away atone side. In said recess is pivotally mounted the keeper member, the same comprising two portions,both of which rock in the lock casing and the outer and latch engaging portion 16 being yieldable in one direction against the action of a coil spring 17, while its'oscillatable movement in the other direction is limited by a stop arm 18 or lateral extension of a locking bar-19 in manner hereinafter set forth. A mortise lock 20 of the latch bolt type, or double cylinder latch lock, with latch 21 is mounted in the door; and, normally, thesaid keeper portion 16 maintains a position well within "the recess 15 so that the latch 21 will clear same and may ride freely thru therecess in manner well understood. However, when the lock is set for an emergency, the keeper i6 is brought forward substantially flushor slightly beneath the face of the keeper plate, as indicated in dotted lines, Fig. 3, so as to provide a rigid abutment which the said latchcannotpass, release of the samethere from being effected only by the use of the proper key inserted in the key hole 22 in manner well understood. The arrangement is such, furthermore, that jafter'havingi once been set to the locking position, the same cannot be restored to its normal inoperative position until the door itself has first been opened and a rod 23 extending outwardly thru the keeper plate withits outer end lying flush with the surface thereof is pushed in *ardly and simultaneously therewith electrical control means, hereinafter described caused to be operated.

Actuation of the emergency lock is effected thru the cnerniaation oi electroananjnet which causes its pivo 'redv mniature 26 to be attracted thereto, it being understood that the closing: of the circuit to this eleetro-n1agrnot amiss eiti'ected by one or more circuit closing; means 27 and 2" located at one or more suitable posit ons more or less remote and under the ctintrol oil pro].)erly authorized member 16.

parties. As shown in Fig. 7. 0110 of the circuit closers a; ,nhle-polo switch 2? is located at a distant point and another as the single pole switch '"7 is placed on the door frame so as to he come :ent when the emergency lock to be reset. lhe said armature is designed to impart an inward movement to the reciprocahle lOClt'ii her 19 as thrua lateral extension 151 en a .9 an upwardly directed t path or movement oi sai The loeliinn" her 1!), normally, is urged outwardly toward the keeper plate by a coil spring 30 pressing against its inner end ill which is mounted to slide in a wall 353 of the c. '15:. Bar 19 is iurther guided by means 0. the late "at e:;- tension 18 which rides between two rollers 34-. carried by a bracket 35 attached to the loci; casing; and the same (}.-T.tO11-I 0ll is notched at 36 for the purpose hereinafter set forth.

A further arn'i 4:0 intendsupwardly from the bar 19 and not d at ii at its lower end and ht1.}l)0lS along; its one side toward said notch. Carried by the inner HlOllll'lGl of the rocking keeper members is a pin or triangular detcnt jll which extents laterally 'i'ron'i an arm aid thereof over the har i9 and is designed to loch in the notch 41 or said arm i0 to retain the outer portion 16 oil the keeper in its retracted position. So soon. however, as the barlil is moved inwardly, as by energizing the electro-magreet and cans ing the extension to en a'r i the arm 29 Oil the said liar the detent d3 released and perm ts the rocking arm 42 oi the member to fly upwardly due to the sprint: pressure transntiitted thereto thru its contact with To this end. the rounded inner end o'l member it; is adapted to ride in a cavity or groove ist when said member 1d i if:

released thin disengagement ot a pin eh'i said extension while the armature thru suhsequent actuation of the elcetroanagnot will not suiiice to treethe detent from itscngagelnent with the top oi. arm 40 for the pole pieces of saidelectro- 'nagnet p1=e' rent sutiicient throwoi its armature to move no 10 the required distance to clear the said detent. There is. furthermore, no actuating torcc tendii'ip; to return the detent to a posi tion for etl'eetinn' subsequent setting position, this being: eilfeeted generally hyananie ally pressing the n'ien'iher 16. The restoration oi the detent to its setting position for suhsemient locking can he eiiieeted only by positively pressing: inwardly the her asfin exerting; pre sure upon its outer and reduced end 523 which extends to the outer face of the strilte plate thru a bushing "18 thereof, which bushing may serve as a hearingfor the same and alsoto facilitate assent hiy as well as preventing bar 19 from going thru the casino; wall. 'i his outer end will not be :uzecssihle, however, until the door has been opened thrn withdrawal oi the latch 2i by inserting; the proper he,' at 22. I-Iowever, the :eeper 16 will still not be freed thereby for the arm .33 of the other keeper portion 4-2 still rests upon the lateral extension 28 of the ari'nature and is freedtherefron'i only when the armature is attracted to more inwardly the lateral extension as hereinbefore set :torth. Portion it? and arm iii-.3 may then be forced down *ardly manually by pressing upon the outer and cooperating moinher l6, carryinpjthe detent with it, the same novingg along; the tapered side of the upright or arm l0 and finally slipping into its notch -:l.. is inward pleasure is removed from the outer end 233 of the said bar. This restores the loch to its normal non-loclcing condition. It will he apyneciated that in the locking position. the rocking arm i2 is supported at two points, viz: the arm l0 and er tension 28, and that cmis crahle resistance is thus m'ovided against attempts to :lorce the lock.

If it he desired to n'laintaia the door open, a

during the warmer .I-OilSOIIS oi the year, a catch 50 may he In'ovided on the floor to engage the hottom oi the said door thru an eleectrically released locking means 51 of well-known construction and which maybe associated therewith so that the door may be closed under the action of a switch 52 from eration of the emergency look. This may be efiected by the double-pole switch 27 which not only closes the circuit to the said releasing means 51 but also the circuit for energizing the electro-magnet 25. Vhen it is desired to operate only the releasing means v51, the switch 52 is provided conveniently to the door so that the latter may be closed and locked in the normal mannerit being understood that use is made of the emergency lock only in emergencies and its presence is not to be a matter of general knowledge, and likewise the operating switches are to be within the control of the proper authorities."

I claim 1. The combination with a door and'a door frame; of a locking mechanism mounted within the latter, and a latch mounted in the door for engagement with thelocking mech anism; electrical means for operating the locking mechanism to prevent withdrawal therefrom of the latch; and mechanical means adapted for manual operation to cooperate in the resetting of the locking mechanism and accessible only after the door has been opened. 7 j

2. The combination withfla door and a door frame; of a locking mechanism mounted within the latter and including a keeper and keeper plate; a latch mounted in the door for engagement with the said keeper; electrical means for operating the locking mechanism to prevent withdrawal therefrom of the latch; and means extending from the locking mechanism outwardly thru the keeper plate to cooperate in the resetting of said locking mechanism.

3. The combination with a door and a door frame; of a locking mechanism mounted within the latter and" including a keeper and keeper plate; a latch mounted in the door for engagement with the said keeper;

electricalmeans for operating the locking mechanism to prevent withdrawal therefrom of the latch; and a locking bar of the locking mechanism adapted to be actuated by the said electrical means and having an extension projecting thruthe keeper plate whereby said locking bar may be mechanically moved beyond the distance possible by the electrical means.

4:. The combination with a door and a door frame; of a locking mechanism mount- .bar may be mechanically moved in opposition to said spring and beyondthe distance possible by the electrical means.

' 5. The .combination'with a door and a door frame; of a locking mechanism mounted within the latter and including an outer and an inner rocking keeper member, and a detent carried by the inner of said mem bers; a latch mountedin the door for engagement with the outer of the keeper members, electrical means'for controlling the position of the detent; and a locking bar of the looking mechanism adapted to be actuated by the said electricalmeans and for manual actuation. I I e 6. The combination with a" door and a door frame; of a'locking mechanism mounted within the latter and including a keeper plate, an outer and an inner rocking keeper member, and a detent carried by the inner of said members; a latch mounted in the door for engagement with the outer of the keeper members; electrical means for controlling the position of the detent; and a locking bar of the locking mechanism adapted to be actuated by the said electrical means and having an extension projecting thru the keeper plate whereby said locking bar may be mechanically moved beyond the distance possible by the electricalmeans.

7 An emergency lock device comprising a casing adapted for mountlngcln the frame of a door, the latter provided with a springv latch and the former having a keeper plate with recess therein, said plate being fitted substantially flush with the face-of the door frame, a pivoted and spring urged keeper niember comprising two cooperatingrocking portions, the one extendmg into the recess and normally depressed a substantial distance beneath the surface of the keeper plate suflicient to pass the cooperating latch spring to urge the same normally outwardly, said bar having also a rod extending outwardly thru the keeper plate and terminati ng substantially flush with its outer face and the other projecting arm of the pair being adapted for engagement with the electrically controlled means to be moved thereby in opposition to the said spring urging said bar outwardly, and a rocking stop member for the inner keeper member.

In testimony whereof I affix my signature.

MORITZ WEISS.

' of the door, electrically controlled means to 

